Captcha in CI

[eluser]cinewbie81[/eluser]
Know where's the problem .. anyway, when i print_r($aCaptcha) now, it return me with the following result :

Code:

Array ( [word] => XJ1VOW [time] => 1206590279.1128 [image] =>

I cant see anything in the image itself except for a white box .. supposefly it should display me some code inside the white box right ? any idea ?